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Finding the Fourth Proportional to 3,992.94, 5,988.78 and 1,071.48

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Solution

The fourth proportional to 3,992.94, 5,988.78 and 1,071.48 is: 1,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.94 : 5,988.78 = 1,071.48 : x
  2. Step 2: Convert to fraction form
    3,992.94/5,988.78 = 1,071.48/x
  3. Step 3: Cross multiply
    3,992.94x = 5,988.78 × 1,071.48
  4. Step 4: Simplify right side
    3,992.94x = 6,416,857.99
  5. Step 5: Solve for x
    x = 6,416,857.99/3,992.94
  6. Step 6: Final answer
    x = 1,607.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.